範例:
exten => s-BUSY,1,Noop(Dial failed due to trunk reporting BUSY - giving up) ; ;exten => s-BUSY,n,Noop(Hangup the call and Return SIP response 603 'Declined' to the caller) ;exten => s-BUSY,n,Hangup(5) ; ;exten => s-BUSY,n,Noop(Hangup the call and Return SIP response 403 'Forbidden' to the caller) ;exten => s-BUSY,n,Hangup(21) ; ;exten => s-BUSY,n,Noop(Hangup the call and Return SIP response 603 'Declined' to the caller) ;exten => s-BUSY,n,Hangup(26) ; ;exten => s-BUSY,n,Noop(Hangup the call and Return SIP response 502 'Bad Gateway' to the caller) ;exten => s-BUSY,n,Hangup(27) ; exten => s-BUSY,n,Noop(Hangup the call and Return SIP response 500 'Server internal failure' to the caller) exten => s-BUSY,n,Hangup(38)